Stadium: Court 12 Round: 44 Ground: Hardcourt outdoor
| ITF Latvia F1 | 2017/07/31 07:00 | Keisuke Numajiri v Alexander Lebedyn | 3-6,6-1,3-6 |
| ITF Latvia F1 | 2017/07/29 11:30 | Keisuke Numajiri v Martin Valdo Randpere | 6-2,6-4 |
| ITF Estonia F1 | 2017/07/25 08:00 | George Von Massow v Keisuke Numajiri | 6-2,6-2 |
| ITF Estonia F1 | 2017/07/23 13:00 | Keisuke Numajiri v Pelle Boerma | 5-7,6-4,6-1 |
| ITF Estonia F1 | 2017/07/23 07:00 | Keisuke Numajiri v Alex Hedman | 6-3,6-2 |
| ITF Lithuania F1 | 2017/07/18 12:45 | Laurynas Grigelis v Keisuke Numajiri | 6-1,6-3 |
| ITF Guam F1 | 2017/06/22 01:30 | Keisuke Numajiri v Ju-Hae Moon | 3-6,3-6 |
| ITF Guam F1 | 2017/06/19 01:15 | Per Nordstrom v Keisuke Numajiri | 1-6,3-6 |
| ITF Austria F6 | 2017/08/08 09:55 | Sandro Kopp v Elliot Benchetrit | 0-6,3-6 |
| ITF Austria F4 Qual | 2017/07/22 10:00 | Jonas Trinker v Sandro Kopp | 6-3,6-1 |
| ITF Austria F3 | 2017/07/15 07:00 | Philip Bachmaier v Sandro Kopp | 6-3,7-5 |
| ITF Austria F2 | 2017/07/12 08:30 | Matvey Khomentovskiy v Sandro Kopp | 6-4,6-3 |
| ITF Austria F1 | 2017/07/01 11:00 | Sandro Kopp v Matic Zaplotnik | 7-5,5-7,1-6 |
| ITF Austria F1 | 2017/07/01 07:00 | Robin Forster v Sandro Kopp | 0-6,0-6 |
| ITF Turkey F16 | 2017/04/24 07:30 | Sandro Kopp v Daniel Mora | 2-6,1-6 |
| ITF Turkey F16 | 2017/04/23 07:00 | Bernd Kossler v Sandro Kopp | 3-6,1-6 |